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    <title>Document</title>
    <style>
        .head {
            cursor: pointer;
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        .content {
            height: 100px;
            width: 500px;
            border: 1px solid #000;
            display: none
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        .highlight{background-color: hotpink}
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    <div id="panel">
        <h5 class="head">什么是jquery</h5>
        <div class="content">
            jQuery 是一个 JavaScript 库。

            jQuery 极大地简化了 JavaScript 编程。

            jQuery 很容易学习。
        </div>
    </div>
    <ul class="wrap1">
        <li>1</li>
        <li>2</li>
        <li>3</li>
        <li>4</li>
        <li>5</li>
    </ul>
    <ul class="wrap2">
        <li>11</li>
        <li>22</li>
        <li>33</li>
        <li>44</li>
        <li>55</li>
    </ul>
    <script src="../js/jquery1.11.3.js"></script>
    <script src="../js/事件和动画.js"></script>
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